I cannot attach MDF samples from ASP .NET project

My RDBMS is Sql2k8:

CREATE DATABASE [Enrico] ON
( FILENAME = N'C:\Inma\AplicacionWeb_Cuina\WebApplication1\App_Data\aspnet-WebApplication1-20131208171104.mdf' ),
( FILENAME = N'C:\Inma\AplicacionWeb_Cuina\WebApplication1\App_Data\aspnet-WebApplication1-20131208171104_log.ldf' )
 FOR ATTACH
GO

Msg 1813, Level 16, State 2, Line 1
Could not open new database 'Enrico'. CREATE DATABASE is aborted.
Msg 948, Level 20, State 1, Line 1
The database 'Enrico' cannot be opened because it is version 706. This server supports version 662 and earlier. A downgrade path is not supported.

Primary platform is Windows 7 Ultimate 64 bit along with VS 2012/Sql2k8 for WPF/SilverLight projects.